52440660 has 36 divisors (see below), whose sum is σ = 159070548. Its totient is φ = 13984128.

The previous prime is 52440659. The next prime is 52440683. The reversal of 52440660 is 6604425.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14470416 + 37970244 = 3804^2 + 6162^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145489 + ... + 145848.

Almost surely, 2^52440660 is an apocalyptic number.

It is an amenable number.

52440660 is an abundant number, since it is smaller than the sum of its proper divisors (106629888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52440660 is a wasteful number, since it uses less digits than its factorization.

52440660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291352 (or 291347 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 52440660 is about 7241.5923663239. The cubic root of 52440660 is about 374.3024900842.

The spelling of 52440660 in words is "fifty-two million, four hundred forty thousand, six hundred sixty".